I read that some cans have a coating on the inside that can be a problem. I
am looking for long burning candles for emergencies and need to know if the
coating is a problem, as I have already collected a bunch of cans.

nice video. I started making candles about 3 wks ago. I use a crock pot to
melt my wax:-). I like how you’re reusing everyday cans for candles. I am
going to do this project too. Thank you for being so inspiring:-)

I’m not sure, as I haven’t heard of or encountered a problem. These
candles, because the container is opaque, don’t give off a lot of light, so
they actually are not very good for emergency situations. Clear containers,
like jars, are better for that.